[PATCH] Correct shell compatibility issue detected with pkgsrc.

[Joel Brobecker]

> String comparison of in a POSIX bourne shell must be done
> with '=', not '=='. For example the NetBSD sh(1) does not
> support it.
> 
> gdb/ChangeLog
> 2017-09-05  Kamil Rytarowski <n54@gmx.com>
> 
> 	* config/djgpp/djconfig.sh: Correct shell portability issue

Indeed. Looks good, so go ahead and push to master.

I did notice you were missing a period at the end of the sentence
in the ChangeLog entry above, but it's in the diff. Can you fix it
before pushing?

Thanks!

> ---
>  gdb/ChangeLog                | 4 ++++
>  gdb/config/djgpp/djconfig.sh | 2 +-
>  2 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/gdb/ChangeLog b/gdb/ChangeLog
> index 6d2eae58bc..a8e1837b6a 100644
> --- a/gdb/ChangeLog
> +++ b/gdb/ChangeLog
> @@ -1,3 +1,7 @@
> +2017-09-05  Kamil Rytarowski <n54@gmx.com>
> +
> +	* config/djgpp/djconfig.sh: Correct shell portability issue.
> +
>  2017-09-05  Philippe Waroquiers  <philippe.waroquiers@skynet.be>
>  
>  	* objfiles.c (get_objfile_bfd_data): Remove useless obstack_init
> diff --git a/gdb/config/djgpp/djconfig.sh b/gdb/config/djgpp/djconfig.sh
> index 6c0d8698e8..dbaf8f5d76 100644
> --- a/gdb/config/djgpp/djconfig.sh
> +++ b/gdb/config/djgpp/djconfig.sh
> @@ -92,7 +92,7 @@ TMPFILE="${TMPDIR-.}/cfg.tmp"
>  
>  # We need to skip the build directory if it is a subdirectory of $srcdir,
>  # otherwise we will have an infinite recursion on our hands...
> -if test "`pwd`" == "${srcdir}" ; then
> +if test "`pwd`" = "${srcdir}" ; then
>    SKIPDIR=""
>    SKIPFILES=""
>  else
> -- 
> 2.14.1

-- 
Joel